and Permanent Pasture. 
85 
The precctllng results are interestinn^ in several points of view. 
Amongst other particulars they show that the experimental field 
at Tubney Warren was in a better agricultural condition than the 
field on which the experiments were tried at Escrick Park. The 
farmyard inauure and artificials which had been used in the year 
preceding barley for raising a crop of swedes told favourably 
upon the land ; moreover the swedes, which turned out a good 
crop, were fed off the land by sheep, liberally supplied with corn 
in addition to the roots ; and by these means the field, no doubt, 
received more fertilising matters than could be appropriated by 
the barley preceding the clover-crop. Consequently the same 
powerful effects were not produced by these dressings, as those 
which in the preceding experiments had such a marked influence 
on the crop. Tlie soil, though naturally poor in potash, evidently 
contained enough of this element in proportion to other available 
soil-constituents to meet the wants of the clover-crop, for neither 
muriate nor sulphate of potash materially increased the green 
produce. 
That the experimental plots were uniform as regards produc- 
tive power appears from the results obtained on the three unma- 
ffiured plots, Nos. 1, 6, and 7, which, as will be seen, produced 
.respectively G tons 13 cwts. 87 lbs., 7 tons, and 6 tons 11 cwts. 
C8 lbs. ; thus showing differences quite as inconsiderable as can 
be expected in the most successful experiments. 
It is worthy of observation that neither the nitrate of soda on 
Plot 1, nor the sulphate of ammonia on Plot 2, had much effect. 
This seems to indicate either that the land, being in a good 
agricultural condition, contained a sufficient amount of nitro- 
genous plant-food or that clover is not materially benefited by a 
icrtiliser, which, like nitrate of soda, supplies only nitrogen in the 
shape of nitric acid ; or by one which, like sulphate of ammonia, 
supplies only ammonia or sulphuric acid. 
A careful perusal of the results of these experiments, on the 
other hand, clearly shows that the soil upon which the clover was 
grown was poor in available phosphoric acid, and contained 
enough of all the other essential fertilising matters to meet the 
requirements of the clover-crop. Hence the addition of 4 cwts. 
of a purely mineral superphosphate gave a considerable increase ; 
•this, however, was not sensibly raised on Plots 10 and 11, upon 
which the same quantity of superphosphate was used in conjunc- 
tion with nitrate of soda and muriate of potash. 
We may learn from these facts the important lesson to take 
particular account in all field trials of the agricultural condition 
in which the land may be found at the time when experiments 
are made. 
If I am not mistaken, we may also deduce from the results of 
